1.Assessment of cerebral arteriostenosis with regional cerebral blood flow loss index formula
Gang WU ; Bingxun LU ; Guoying XU ; Yiyong ZHENG ; Huixing WEI
Chinese Journal of Tissue Engineering Research 2005;9(9):232-234
BACKGROUND: Transcranial Doppler(TCD) spectrum analysis techniques cannot measure the diameters of blood vessels and therefore and not be used to calculate the changes of brain blood flow. A formula was designed for regional cerebral blood flow loss index(rCBFLI) following arteriostenosis when arteriostenosis index formula was deduced; the former may provide a reference to assess cerebral function.OBJECTIVE: To introduce the formula of cerebral blood flow loss ratio obtained basing on TCD results.DESIGN: Retrospective controlled study based on patients with cerebral middle arteriostenosis diagnosed with TCD and healthy people.SETTING: At the departments of neurology in a university hospital and in a military medical university affiliated hospital of Chinese PLA.PARTICIPANTS: Between October 1994 and December 2000,43 patients who were confirmed of arteriostenosis with TCD at outpatient or neurological ward of the First Affiliated Hospital of Fujian Medical University were enrolled into this study,and their TCD results were compared with 908 normal controls between March 1992 and September 2000.METHODS: Stenosis index (STI) formula was deduced from TCD results of 31unilateral and 12 bilateral stenoses at middle cerebral artery(MCA) . STI = 1- [ normal average blood velocity (Vm0) ÷ average blood velocity at stenosisSince(PI1 ÷PI0) may be equal to [post-stenosis blood flow(Q1) ÷ normal blood flow(Q0)],regional cerebral blood flow loss index is concluded as:MAIN OUTCOME MEASURES: rCBFLI,relationship between STI and Vm,as well as between rCBFLI and STI.RESULTS: rCBFLI formula was used to calculate the rCBFLI of 31 patients following unilateral MCA stenosis. rCBFLI of these 31 patients was obtained by Pearson statistical analysis. STI was found to be related to the average blood velocity at stenosis with relative coefficient(Vm) of(r) =0.76( P < 0. 001 )and r = 0. 83 ( P < 0. 001 ) . rCBFLI was proved to be correlated with Vm and STI with r = 0. 76( P < 0. 01 ) and r = 0. 81 in 55 side MCA stenoses,and the difference was of statistical significance( P < 0. 001 ).CONCLUSION: rCBFLI can be used to assess the decrement of regional brain blood flow due to the stenosis of supplying artery; also,it can be used to observe the changes of brain hemodynamics if combined with STI.
2.Effect of total thyroidectomy on growth and development of children and adolescents.
Hui-Zheng LI ; Ping-Zhang TANG ; Zhen-Gang XU
Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2008;43(5):381-382
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Thyroid Neoplasms
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adverse effects
4.Three-dimensional finite element analysis of stress distribution in necrotic femoral head before and after tantalum rod implantation
Gang ZHU ; Ligui ZHANG ; Zhong ZHENG ; Mingjie XU ; Ming YANG
Chinese Journal of Tissue Engineering Research 2016;20(26):3883-3889
BACKGROUND:Tantalum rod implant technology is a new method of early osteonecrosis treatment. Current research on stress distribution before and after tantalum rod implant in different sizes of femoral head necrosis area is few. OBJECTIVE:To analyze the stress distribution before and after tantalum rod implantation in different sizes of necrotic femoral head area using three-dimensional finite element method. METHODS:Three-dimensional finite element models of normal femoral head and necrotic femoral head of 15, 20 and 30 mm diameterwere constructed. Eight measuring points were chosen on two tiers of each necrotic model to detect the stress distribution and its alteration before and after tantalum rod implantation. RESULTS AND CONCLUSION:(1) Stress concentration werefound on every necrotic femoral head, most pronounced on the one with 30 mm lesion. (2) Tantalum implant appeared to reduce the stress concentration generaly. Comparison of the peak points of these models indicated most significant benefit in 15 mm lesion, next in 30 mm lesion, last in 20 mm lesion. (3) Results indicate that larger lesion entails more concentrated stress distribution and more likely to colapse. Tantalum rod implantation can delay the development of necrosis of the femoral head, andismost effective in smal lesion.
5.RECD Changes in Children with Hearing Aids
Gang LI ; Yun ZHENG ; Ke XU ; Yong TAO ; Zhaoli MENG
Journal of Audiology and Speech Pathology 2014;(1):85-87
Objective To explore the real ear to coupler difference (RECD) changes in children with hearing aids .Methods 132 severe to profound hearing impaired children who came to hearing center for hearing aids exami-nation and adjustment were recruited into the study .They were put into 6 groups according to the test age ,<1 yr group(15 cases) ,1 yrs group(26 cases) ,2 yrs group(36 cases) ,3 yrs group(29 cases) and 4 yrs group(26 cases) . And all of them had the RECD tests for both ears with custom earmolds .Results The average RECDs for both ears decreased with the age increased .There were statistically differences for the same lateral ears when age differences surpass 2 years except for the difference for left ears between the children in the <1 yr group and 2 yrs group .This study showed there were statistically differences between left and right ears for majority of groups (except for 2 yrs group) .Conclusion RECD is an important factor for individual adjustment .The current results show that the chil-dren with hearing aids should have RECD tests for both ears at least once per two years .
6.A Wistar rat model of radiation-induced masseter injury
Gang DONG ; Jianjin ZHENG ; Tao LI ; Xin XU ; Shulai LU
Chinese Journal of Tissue Engineering Research 2013;(24):4515-4520
10.3969/j.issn.2095-4344.2013.24.021
7.The Influence of Cognitive Distress on the Degree of Tinnitus
Zhaoli MENG ; Gang LI ; Yong TAO ; Ke XU ; Yun ZHENG
Journal of Audiology and Speech Pathology 2017;25(5):480-483
Objective To study the correlation between cognitive distress and tinnitus related handicaps.Methods One hundred and ninety-two primary tinnitus subjects ninety-nine males and ninety-three females were included in this study.The average age was 45±15.52 years old.The average durations of tinnitus for male and female were 25.67±37.71 months and 27.12±45.42 months, respectively.The patients were asked to fill the Mandarin tinnitus questionnaire (MTQ) and Mandarin (Chinese) tinnitus handicap inventory (THI-CM).The correlation between cognitive distress (CD) and tinnitus related handicap was studied.Results The average score of MTQ was 36.95±20.06.The average score of CD (Q17,18,23,41, and 42)was 2.61.The average score of question 17,18, 23,41, and 42 of MTQ was 2.81,2.63,2.59,2.40, and 2.41,respectively.The average score of THI-CM was 23.89±20.06.The correlation between CD and THI-CM was 0.64(P<0.01);for male and female were 0.63 and 0.66(P<0.01),respectively.The correlations between CD and THI-CM among young, middle and old age groups were 0.02,0.07 and 0.38(P>0.01),respectively.The correlations between CD and THI-CM among the nondisabled, mild, moderate and severe groups according to the scores of THI-CM were 0.30(P<0.01),0.29(P>0.01),-0.12(P>0.01), and 0.23(P>0.01),respectively.Conclusion No strong correlation was demonstrated between the CD and the THI-CM.The same results were shown for males and female.No correlation was demonstrated between ages and cognitive distress.Correlation coefficient of cognitive distress was increased with age.The tinnitus handicaps of patients might be vulnerable to cognitive distress with ageing.
8.Effects of extract of ginkgo biloba on human tubular epithelial-mesenchymal transition induced by transforming growth factor-?_1
Xizhen XU ; Changlong ZHENG ; Ling TU ; Gang ZHAO ; Daowen WANG
Chinese Journal of Pathophysiology 2000;0(11):-
AIM:to investigate the effects of extract of ginkgo biloba (EGB) on human tubular epithelial-mesenchymal transition induced by transforming growth factor-?1.METHODS: HK2 cells were induced to epithelial-mesenchymal transition by transforming growth factor-?1 (TGF-?1, 10 ?g/L). EGB was added into the medium of HK2 cells 2 h before TGF-?1 was added. The expressions of E-cadherin, ?-smooth muscle actin (?-SMA), NADPH oxidase p67phox and superoxide dismutase (SOD) were determined by Western blotting. Malondialdehyde (MDA) in the mediums of HK2 cells was detected. RESULTS: EGB significantly attenuated the downregulation of E-cadherin, the upregulation of ?-SMA and p67phox, the downregulation of SOD and the upregulation of MDA in HK2 cells induced by TGF-?1.CONCLUSION: EGB significantly attenuates human tubular epithelial-mesenchymal transition induced by TGF-?1, and its underlying mechanism is that EGB attenuates the upregulation of p67phox and the downregulation of SOD induced by TGF-?1.
9.Ileum to the S-type of suture produced orthotopic neobladder-with a three cases report
Qi-Chuan ZHENG ; Jin-Guo HUANG ; Fang-Cheng DING ; Gang XU ; Gang WANG ;
Cancer Research and Clinic 2006;0(12):-
objective To evaluate the clinical application value of ileum to the S-type of suture pro- duced orthotopic neobladder.Methods Radical cystectomy and ileal neobladder with"S"shape were per- formed in 3patients with transitional cell carcinoma.Ureter implant into neobladder with embedding nipple techniques,bottom of neobladder coincide with urethra stump.Results The average operative time to form a neobladder was 5 hours,average bleeding volume was 366 ml during operation,3 cases can control urine dur- ing daytime,nycturia 1-3 times every night.Neobladder has a large capacity,low pressure,and electrolytes of blood was normal.Conclusion The construction of an ileal neobladder using a smaller part of ileum that has been completely detubularized and fashioned by S shape is easy and agreeable to perform.This mode of oper- ation has low complication rates,achieves adequate capacity at low pressure,and provides satisfactory conti- nence rates.It is a fine scheme to treat invasion and multiple carcinoma of bladder.
10.Regulation of Jinxin Oral Liquid for the expression of negative regulatory factor of TLR3 signaling pathway SOCS1 in RSV infected BALB/c mice.
Zheng-Guang CHEN ; Shou-Chuan WANG ; Jian-Ya XU ; Qi-Gang DAI
Chinese Journal of Integrated Traditional and Western Medicine 2014;34(12):1499-1506
OBJECTIVETo investigate the regulation trend of Jinxin Oral Liquid (JXOL) on the expression of negative regulatory factor of TLR3 signaling pathway SOCS1 in the lung tissue of RSV infected BALB/c mice at different time points.
METHODSTotally 75 BALB/c mice were randomly divided into 5 groups, i.e., the normal control group, the model group, the ribavirin group, the high dose JXOL group, and the equivalent dose JXOL group, 15 in each group. Each group had 3 intervention ways (I, II, and III) with 5 mice treated in each group. BALB/c mice were nasally infected with respiratory syncytial virus (RSV), and treated by different intervention ways. After intervention, mice were killed and their lung tissues were sampled, mRNA expression levels of RSV-M, SOCS1, and IFN-β were detected by Real time PCR. The expression of SOCSl at the protein level was detected by Western blot.
RESULTSCompared with the normal control group, the mRNA expression level of SOCS1 and IFN-β, and the protein expression level of SOCS1 increased significantly in the model group intervened by intervention I and II (all P < 0.01), but the mRNA expression level of IFN-β decreased significantly in model group intervened by intervention III (P < 0.01). Compared with the model group, the mRNA expression level of RSV-M all significantly decreased in the high dose JXOL group and the equivalent dose JXOL group intervened by 3 intervention ways (all P < 0.01). The mRNA expression level of SOCS1 significantly decreased in the high dose JXOL group intervened by intervention I and III and the equivalent dose JXOL group intervened by 3 intervention ways (all P < 0.01). The mRNA expression level of IFN-β significantly decreased in the high dose JXOL group intervened by intervention I and II and the equivalent dose JXOL group intervened by intervention I (all P < 0.01), while it significantly increased in the high dose JXOL group intervened by intervention III and the equivalent dose JXOL group intervened by intervention III (all P < 0.01). The protein expression level of SOCS1 significantly decreased in the high dose JXOL group intervened by intervention I and the equivalent dose JXOL group intervened by 3 intervention ways (all P < 0.01), while it significantly increased in the high dose JXOL group intervened by intervention III (all P < 0.01). Compared with the high dose JXOL group, the mRNA expression level of RSV-M decreased significantly in the equivalent dose JXOL group intervened by intervention I and II (P < 0.01). The mRNA expression level of SOCS1 and IFN-β decreased significantly in the equivalent dose JXOL group intervened by intervention I (P < 0.01), but the mRNA expression level of IFN-β increased significantly in the equivalent dose JXOL group intervened by intervention II and III (all P < 0.01). The protein expression level of SOCS1 decreased significantly in the equivalent dose JXOL group intervened by 3 intervention ways (all P < 0.01).
CONCLUSIONSJXOL could inhibit the expression of SOCS1 in the lung tissue of RSV infected BALB/c mice at different time points. Its regulatory effect might be associated with promoting the expression of interferon type I and further fighting against RSV.
Animals ; Drugs, Chinese Herbal ; pharmacology ; therapeutic use ; Lung ; metabolism ; Mice ; Mice, Inbred BALB C ; RNA, Messenger ; Respiratory Syncytial Virus Infections ; drug therapy ; metabolism ; Respiratory Syncytial Viruses ; Ribavirin ; Signal Transduction ; Suppressor of Cytokine Signaling 1 Protein ; Suppressor of Cytokine Signaling Proteins ; metabolism ; Toll-Like Receptor 3 ; metabolism